The lease manager periodically examines the leases for time expiration.

租约管理器定期检查租约是否到期。

youdao

Authenticated Requests with Expiration time.

带有到期时间的认证请求。

youdao

The expiration time is set by default to one hour.

在默认情况下，过期时间设置为一小时。

youdao

With very little time until expiration, front-month options activity is especially speculative.

FORBES: VMware Earnings Preview: High Expectations May Favor Bearish Traders

In this scenario the trader is happy to pocket the rich premium available on the options given the length of time to expiration and increase in implied volatility on top of the sharp rise in the price of the underlying.

FORBES: Bullish Options Speculators Step Into Emulex, Amkor, American Eagle

If you purchase an option, you have the right to exercise it (with an American style option as most equities are) at any time in the expiration cycle.

FORBES: Pinning The $500 Tail On The Apple